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PDF MAX872 Data sheet ( Hoja de datos )
| Número de pieza | MAX872 | |
| Descripción | Precision Voltage References | |
| Fabricantes | Maxim Integrated | |
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19-0005; Rev 2; 6/97
10µA, Low-Dropout,
Precision Voltage References
General Description
The MAX872/MAX874 precision 2.5V and 4.096V micro-
power voltage references consume a maximum of only
10µA and operate from supply voltages up to 20V. The
combination of ultra-low quiescent current and low
200mV dropout makes them ideal for battery-powered
equipment. They source and sink up to 500µA with only
200mV input voltage headroom, which makes the 2.5V
MAX872 ideal for use with a 3V supply and the 4.096V
MAX874 ideal for use with a 5V supply.
Initial accuracy of 0.2% at +25 °C (±5mV for the MAX872,
±8mV for the MAX874) and low 40ppm/°C max drift make
these references suitable for a wide range of precision
applications.
Applications
Hand-Held Instruments
Battery-Operated Equipment
Power Supplies
Typical Operating Circuit
3.0V (MAX872)
5.0V (MAX874)
VIN
VOUT
MAX872
MAX874
TRIM
GND
Features
o Output Voltage
2.500V ±0.2% (MAX872)
4.096V ±0.2% (MAX874)
o Wide Operating Voltage Range
2.7V to 20V (MAX872)
4.3V to 20V (MAX874)
o 10µA Max Supply Current
o 40ppm/°C Max Drift Over Extended Temp. Range
o Line Regulation Over Temp.
20µV/V (MAX872)
75µV/V (MAX874)
o Load Regulation Over Temp.
0.6mV/mA Max (MAX872)
1.0mV/mA Max (MAX874)
o ±500µA Sink/Source Current
Ordering Information
PART
TEMP. RANGE
MAX872CPA
0°C to +70°C
MAX872CSA
0°C to +70°C
MAX872C/D
0°C to +70°C
MAX872EPA
-40°C to +85°C
MAX872ESA
-40°C to +85°C
MAX874CPA
0°C to +70°C
MAX874CSA
0°C to +70°C
MAX874C/D
0°C to +70°C
MAX874EPA
-40°C to +85°C
MAX874ESA
-40°C to +85°C
* Dice are specified at +25°C only.
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
Pin Configuration
TOP VIEW
I.C. 1
VIN 2
TEMP 3
GND 4
MAX872
MAX874
8 COMP
7 I.C.
6 VOUT
5 TRIM
REFERENCE WITH TRIMMED OUTPUT
DIP/SO
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
http://www.Datasheet4U.com/
1 page  
10µA, Low-Dropout,
Precision Voltage References
Typical Operating Characteristics
(VIN = 3V (MAX872), VIN = 5V (MAX874), no load, TA = +25°C, unless otherwise noted.)
DROPOUT VOLTAGE
vs. SOURCE CURRENT
250
200
150 TA = +85°C
TA = +25°C
100
50
0
100
TA = -40°C
150 200
SOURCE CURRENT (µA)
250
SUPPLY CURRENT
vs. INPUT VOLTAGE
20
15
MAX874
10
5 MAX872
0
0 2 4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
MAX872
SUPPLY CURRENT vs. TEMPERATURE
20
NO LOAD
VIN = 20V
15
VIN = 10V
VIN = 5V
10
VIN = 3V
5
-50 -25 0 25 50 75 100
TEMPERATURE (°C)
MAX874
SUPPLY CURRENT vs. TEMPERATURE
25
MAX872
OUTPUT VOLTAGE vs. INPUT VOLTAGE
2.505
MAX874
OUTPUT VOLTAGE vs. INPUT VOLTAGE
4.100
20
VIN = 20V
2.503
15
VIN = 10V
2.500
VIN = 5V
10 2.498
4.098
4.096
4.094
4.092
5
-50 -25 0 25 50 75 100
TEMPERATURE (°C)
MAX872
LOAD REGULATION vs. TEMPERATURE
4
2.495
2 4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
MAX874
LOAD REGULATION vs. TEMPERATURE
5
4.090
4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
MAX872
OUTPUT VOLTAGE
vs. SOURCE CURRENT
2.502
3
2 SINKING 0µA TO -500µA
1
0
-50
SOURCING 0µA TO 500µA
-25 0 25 50 75
TEMPERATURE (°C)
100
4
3
SINKING 0µA TO -500µA
2
1
0
-50
SOURCING 0µA TO 500µA
-25 0 25 50
TEMPERATURE (°C)
75
100
2.501
2.500
2.499
2.498
0.01
0.1 1
SOURCE CURRENT (mA)
10
_______________________________________________________________________________________ 5
http://www.Datasheet4U.com/
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MAX872.PDF ] | |
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